/**
*      author: Y_Yao
*      created: 2024-12-13 19:00:31
**/

#include<bits/stdc++.h>

#define int LL
using namespace std;
using LL = long long;
const LL LLINF = 1e18;
const int INF = 0x3f3f3f3f;
int n,a,b,c;

void solve()
{
    cin >> n >> a >> b >> c;
    int m = min(a,min(b,c));
    int ans = 0;
    while(n >= m)
    {
        if(n >= a)
        {
            n -= a;
            ans++;
        }
        else if(n >= b)
        {
            n -= b;
            ans++;
        }
        else if(n >= c)
        {
            n -= c;
            ans++;
        }
    }

    cout << ans << endl;
}

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    int t = 1;
    //cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}